someone can give me more info about it??? I've bought the digital version of the manga volume 4 and I'm really disappointed ... feeling tricked ... but I've probably misunderstood the japanese post talking about it.

Yes, I've bought volume 4 today from a japanese digital store and I confirm that the scene with the Medusa like chara is not included ... I'm starting to think that it was only a single extra manga square just to gain visibility ... as you can imagine I'm absolutely mad

So, that scene was part of a promotional sequence through Urasunday that featured requested defeat scenes for the various heroines. The selected scenes were petrification, remote control via marionette, and lamia vore. Sorry that you feel duped, but the entirety of S Rare Kanojo passes through Urasunday on a weekly basis, and there haven't been any petrification scenes in the main manga yet (a few ice freezes though).

So, that scene was part of a promotional sequence through Urasunday that featured requested defeat scenes for the various heroines. The selected scenes were petrification, remote control via marionette, and lamia vore. Sorry that you feel duped, but the entirety of S Rare Kanojo passes through Urasunday on a weekly basis, and there haven't been any petrification scenes in the main manga yet (a few ice freezes though).

So, that scene was part of a promotional sequence through Urasunday that featured requested defeat scenes for the various heroines. The selected scenes were petrification, remote control via marionette, and lamia vore. Sorry that you feel duped, but the entirety of S Rare Kanojo passes through Urasunday on a weekly basis, and there haven't been any petrification scenes in the main manga yet (a few ice freezes though).

Recent chapters have the girls (there's quite a few more now) fighting a loli medusa and her pet, which has a petrifying eye beam. The mini-medusa's snake hair has a petrifying effect when it bites one of them.